Tftpfs serves files from a TFTP server as a filesystem. TFTP is
mostly used by bootloaders to download kernel images for network
bootstrap (see dhcpd(8)). As the protocol has no way of distinguishing
files from directories, the final path segment needs to conain
a dot (.) character to be recognized as a file. To access
files that have no dot in the filename, a trailing dot has to
be added and will be stripped before it is passed to the server.

The –D option enables 9P debugging messages.

The –s option causes tftpfs to post the 9P service as /srv/srvname
and disables the default mount.